There are three types of clients in coaching: a visitor, a client, and a complainant.
A visitor is someone who has no desire to change anything, probably, someone who was forced to go to a coaching session, for instance, an employer or an employee, or a person who does not know what coaching can give him and how serious it is.
A complainer is someone who wants to achieve a goal by changing things and people around him but is not ready to change himself. Although they probably understand that there is something wrong, nothing beyond complaints can be done. The complainant does not want to take responsibility for changes, is not ready to take actions leading to changes. There are, of course, many excuses why this will not work at all, specifically with him or right now.